Filters








150 Hits in 11.8 sec

Cloud variability as revealed in outgoing infrared spectra: Comparing model to observation with spectral EOF analysis

Xianglei Huang, John Farrara, Stephen S. Leroy, Yuk L. Yung, Richard M. Goody
2002 Geophysical Research Letters  
to satellite radiance spectra and synthetic spectra derived from a general circulation model (GCM).  ...  1] Spectrally resolved outgoing radiance is a potentially powerful tool for testing climate models.  ...  Toon and R. Zurek for valuable comments. We wish to thank two anonymous referees for improving the paper. This research is supported by NOAA grant Grant No.  ... 
doi:10.1029/2001gl014176 fatcat:xywzhlm6mzgrndqcbi33cp4avu

Time‐varying Emulator for Short and Long‐Term Analysis of Coastal Flood Hazard Potential

D. Anderson, A. Rueda, L. Cagigal, J.A.A. Antolinez, F.J. Mendez, P. Ruggiero
2019 Journal of Geophysical Research - Oceans  
However, the number of processes contributing to such events is too high for relatively short observational records to have measured all of the constructive combinations of waves, surge, wind, and sea  ...  The Time-varying Emulator for Short-and Long-Term analysis of coastal flood hazard potential is presented here as a methodology capable of producing new iterations of the sea-state parameters associated  ...  (a) An example of the temporal variability in IPC 1 and IPC 2 of outgoing longwave radiation. (b) Demonstration of clustering with IPC 1 and IPC 2 for global location and strength of MJO convection.  ... 
doi:10.1029/2019jc015312 fatcat:uu7jxtrqdfainl7ng6sp2m3k2u

Equatorial Waves Including the Madden–Julian Oscillation in TRMM Rainfall and OLR Data

Hye-Kyung Cho, Kenneth P. Bowman, Gerald R. North
2004 Journal of Climate  
Consistency with their results gives confidence in the TRMM data for wave studies. The results from this study can be utilized for modeling and testing theories.  ...  By using spacetime cross-section analysis and spectral analysis, the longitudinal and latitudinal behaviors of the overall waves and the dominant waves are observed.  ...  Thus, the results from this study can be helpful to investigate the characteristics of the tropical waves and to test present theories and for the modeling of tropical waves and tropical convection.  ... 
doi:10.1175/3215.1 fatcat:k7g64rgd5zhinm5ovyxndi5ph4

Routine monitoring and analysis of ocean swell fields using a spaceborne SAR [article]

Fabrice Collard, Fabrice Ardhuin
2009 arXiv   pre-print
Satellite Synthetic Aperture Radar (SAR) observations can provide a global view of ocean swell fields when using a specific "wave mode" sampling.  ...  A more general geometric optics model is thus proposed for the far field of the storms. This model is applied here to determine the attenuation over long distances.  ...  SAR data was provided by the European Space Agency (ESA) and buoy data was kindly provided by the U.S. National Data Buoy Center, and Marine Environmental Data Service of Canada.  ... 
arXiv:0812.2318v3 fatcat:zs3uer2r2bffjkrdi774jvzsei

The Polar Radiant Energy in the Far InfraRed Experiment: A New Perspective on Polar Longwave Energy Exchanges

Tristan S. L'Ecuyer, Brian J. Drouin, James Anheuser, Meredith Grames, David Henderson, Xianglei Huang, Brian H. Kahn, Jennifer E. Kay, Boon H. Lim, Marian Mateling, Aronne Merrelli, Nathaniel B. Miller (+5 others)
2021 Bulletin of The American Meteorological Society - (BAMS)  
, for the first time, the spectral, spatial, and temporal variations of polar far-infrared emission.  ...  The spectral variation of far-infrared radiation that makes up 60% of polar thermal emission has never been systematically measured impeding progress toward consensus in predicted rates of Arctic warming  ...  Collecting spectra in all seasons, PREFIRE's CubeSats will provide a census of the temporal and spatial character of FIR radiation in polar regions and provide pathways for using these observations to  ... 
doi:10.1175/bams-d-20-0155.1 fatcat:wvewj25qy5gphfuioomsioqhwi

Waves and coherent flows in the tropical atmosphere: new opportunities, old challenges

Claudia Christine Stephan, Nedjeljka žagar, Theodore G. Shepherd
2021 Quarterly Journal of the Royal Meteorological Society  
Global simulations at kilometre-scale resolution are now feasible and offer new opportunities to the atmospheric science community for testing and expanding our understanding of climate variability and  ...  behaviour seen in observations and in comprehensive simulation models.  ...  A widely employed method to analyze the role of MRG and Kelvin waves in tropical wave variability is wavenumber-frequency filtering of single-level, single-variable data (e.g., outgoing long-wave radiation  ... 
doi:10.1002/qj.4109 fatcat:fsppf7hnmjeujoep4atsn5ol5q

Simulation of the Intraseasonal Oscillation in the ECHAM-4 Model: The Impact of Coupling with an Ocean Model*

Susan Kemball-Cook, Bin Wang, Xiouhua Fu
2002 Journal of the Atmospheric Sciences  
This region of easterly shear is critical for the emission of Rossby waves by equatorial convection associated with the ISO.  ...  The simulation of the intraseasonal oscillation (ISO) in these three runs was compared with data from the NCEP reanalysis and outgoing longwave radiation from NOAA polar-orbiting satellites, with particular  ...  Harry Hendon for providing the computer program for generating spacetime spectra. Comments by Dr.  ... 
doi:10.1175/1520-0469(2002)059<1433:sotioi>2.0.co;2 fatcat:5hqimrji65etvjkvd7xspx3vw4

Albedo control of seasonal South Polar cap recession on Mars

Frédéric Schmidt, Sylvain Douté, Bernard Schmitt, Mathieu Vincendon, Jean-Pierre Bibring, Yves Langevin
2009 Icarus (New York, N.Y. 1962)  
Over the last few decades, General Circulation Models (GCM) have been used to simulate the current Martian climate.  ...  We propose several possibilities for the origin of the asymmetric albedo control. The next step will be to identify and model the physical processes that create the albedo differences.  ...  The authors also would like to thank Nicolas Jourdain for useful discussions and Harvey Harder to improve the English of this article.  ... 
doi:10.1016/j.icarus.2008.12.014 fatcat:cm7us6ndyrgixg5bex3trd3xcu

Global Warming: CO2 vs Sun [chapter]

Georgios Florides, Paul Christodoulides, Vassilios Messaritis
2010 Global Warming  
The climate is so sensitive to clouds that present models of global climate can vary in their global warming predictions by more than a factor of 3, depending on how clouds are modeled (Goddard Space Flight  ...  As the National Space Institute of Denmark (2009) informs us, the European Organization for Nuclear Research, CERN, has currently been creating an atmospheric research facility at its Particle Physics  ...  In a related article Griggs & Harries (2007) , observe the changes in the earth's spectrally resolved outgoing longwave radiation (OLR), comparing the outgoing longwave spectra from the 1970 (IRIS) the  ... 
doi:10.5772/10283 fatcat:2spcbjhxyrd65mnbl7csouzzzq

An overview of MATISSE-v2.0

Luc Labarre, Karine Caillault, Sandrine Fauqueux, Claire Malherbe, Antoine Roblin, Bernard Rosier, Pierre Simoneau, Karin Stein, John D. Gonglewski
2010 Optics in Atmospheric Propagation and Adaptive Systems XIII  
The symposium, like our other conferences and activities, would not be possible without the dedicated contribution of our participants and members.  ...  This Programme is based on commitments received up to the time of publication and is subject to change without notice.  ...  Interpretation of the results is performed by means of a theoretical model developed for PSTPM investigation of isolated nanoparticles [6].  ... 
doi:10.1117/12.868183 fatcat:5anlqspzzzcftfufaxvlr45zve

Integrated Observations of Global Surface Winds, Currents, and Waves: Requirements and Challenges for the Next Decade

Ana B. Villas Bôas, Fabrice Ardhuin, Alex Ayet, Mark A. Bourassa, Peter Brandt, Betrand Chapron, Bruce D. Cornuelle, J. T. Farrar, Melanie R. Fewings, Baylor Fox-Kemper, Sarah T. Gille, Christine Gommenginger (+14 others)
2019 Frontiers in Marine Science  
Despite surface waves being strongly coupled to the upper ocean circulation and the overlying atmosphere, efforts to improve ocean, atmospheric, and wave observations and models have evolved somewhat independently  ...  A significant challenge for the coming decade of wind, current, and wave observations will come in combining and interpreting measurements from (a) wave-buoys and high-frequency radars in coastal regions  ...  Delaware); and Steve Morey (U. Miami) for helpful comments and suggestions.  ... 
doi:10.3389/fmars.2019.00425 fatcat:byow2vu7snbx3orzoe573epiqu

Interactions between the stratospheric polar vortex and Atlantic circulation on seasonal to multi-decadal timescales

Oscar Dimdore-Miles, Lesley Gray, Scott Osprey, Jon Robson, Rowan Sutton, Bablu Sinha
2022 Atmospheric Chemistry and Physics  
Using the relationship between persistent vortex behaviour and the AMOC response established in the model, we use regression analysis to estimate the potential contribution of the 8-year SSW hiatus interval  ...  In this study, we use a 1000 year preindustrial control simulation of the UK Earth System Model to study such interactions, using a wavelet analysis technique to examine non-stationary periodic signals  ...  The authors would like to thank their respective funding bodies and Tim Woollings and Chris O'Reilly, for the useful discussions.  ... 
doi:10.5194/acp-22-4867-2022 fatcat:e4ogzbcmp5hlfehx6m6fbdothe

Climate [chapter]

2005 A Climate Modelling Primer  
Phase 2 used observational datasets to force the models for particular locations and vegetation types.  ...  Modellers must manage datasets produced by their model (perhaps several Gb per simulated year) and also manage observational datasets used for validation and forcing.  ...  It is unusual for a single co-ordinate system to be appropriate for all situations in climate modelling. Many models now use a co-ordinate system that is an amalgamation of different systems.  ... 
doi:10.1002/0470857617.ch1 fatcat:evealdfftfba5oec3bgmjzanaa

Changes of Subseasonal Variability Associated with El Niño

Gilbert P. Compo, Prashant D. Sardeshmukh, Cécile Penland
2001 Journal of Climate  
Global reanalysis data as well as atmospheric general circulation model (AGCM) simulations are used for this purpose.  ...  For the observational analysis, 53 yr of NCEP reanalyses are stratified into El Niño, La Niña, and neutral winters [Jan-Feb-Mar (JFM)].  ...  Livezey of NCEP made useful suggestions for implementing field significance for the present study. The GISST data were kindly provided by D. Rowell and the Hadley Centre of the Met Office.  ... 
doi:10.1175/1520-0442(2001)014<3356:cosvaw>2.0.co;2 fatcat:iqh3ibsdz5hwdpazoqyvqiieru

Low-frequency nonlinearity and regime behavior in the Northern Hemisphere extratropical atmosphere

Abdel. Hannachi, David M. Straus, Christian L. E. Franzke, Susanna Corti, Tim Woollings
2017 Reviews of Geophysics  
We review a variety of techniques for identifying circulation regimes from reanalysis and numerical model output.  ...  Such patterns have been observed in the midlatitude atmosphere and have been noticed to persist for time periods much longer than those typical of midlatitude cyclones [Namias, 1950; Horel, 1985] .  ...  The data used to generate Figures 1 and 7 come from the reanalysis data set produced by the National Centers for Environmental Prediction and stored at the National Center for Atmospheric Research (available  ... 
doi:10.1002/2015rg000509 fatcat:52xgk26cnvdsbaajxuhmfx7tz4
« Previous Showing results 1 — 15 out of 150 results